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Performance Diesel Inc.

4.2 (5 reviews)
Open • 8:00 am - 5:00 pm

Services - Performance Diesel Inc.

Commercial truck repair

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8 months ago

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6 years ago

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8 years ago

Outstanding customer service!! These guys went above and beyond to acomodate us and fix our vehicle! Most definitely choose this business!

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Red Rock Garage - RED ROCK GARAGE

Red Rock Garage

(8 reviews)

Crooks. I blew an engine in my motorhome. I had nothing…read morebut problems with this shop. New motor left uncovered for weeks in the shop exposing the long block to shop dirt and debris. Then when they were putting the motor in, they dropped the engine and put it into the radiator. When I got the bill it was almost double what I was quoted. I was charged for extra parts including a new radiator they told me was bad. I was furious since I was not informed of the extra charges. I didn't know what happened until months later when bumped into someone who was in the shop that day told me what had happened. Bottom line. This is one of the shops you should stay far away from.

I am from Las Vegas, Nevada going to my family reunion in Idaho. On the way there I noticed my…read morecar had a check engine light that came on. Stop at Red Rock Garage in St. George, Utah around 1:30 pm, which a guy name Jerroel helped me. He said my oil sensor wasn't working and there were no oil in my car. Stayed there for at least three hours, he did an amazing job working on my car, ordered the part and stayed an extra hour working on my car. They closed at 5:00 pm and was there to 6:00 pm. Dennis was also there and I cannot thank them enough for going above and beyond their service and professionalism. Also, I thought my car bill was going to be at least $500.00 and I was only charged less than $200.00. I definitely recommend going to them. David P.

Matts Auto and RV Repair - The beast

Matts Auto and RV Repair

(19 reviews)

Where do I start? First time I went there, Matt got me in when I had a time crunch, even though he…read morewas quite busy. Started taking my three vehicles there, and every time, good service and good prices. An old truck was having some road noise issues. I took it to the dealer, who wrote me up a service order for $2600. I suspected that Matt's could beat that price. I left the truck at Matt's, but Matt called me after 20 minutes, and said I needed to come back to the shop. That worried me a little, but when I got there, he had my truck up on the lift, and showed me that all 4 items the dealer said needs replacing, were sound and didn't need repair or replacement at all. Saved me $2600 (less the cost of the shocks that he pointed out were in poor condition..and then almost all the road noise went away!). That sure cemented me to use only Matt's. Brought my cargo trailer in prior to a long road trip, and I wanted them to check everything out. They did, and when I offered to pay, he said "No charge. Didn't take us long, and you're a good customer..." or something like that. I am a mechanical idiot, but they never talk down to me, or make me feel stupid. And I always get a fair price from them. No wonder they are rated #1 in Iron County so frequently.

Matt's RV Repair is my go-to place when my RV has issues and it always has issues. I know when I…read moreleave it with Matt and his guys, it is in good hands. Glad he's in Cedar City!

St George Transmission & Automotive

St George Transmission & Automotive

(24 reviews)

Had to make an appoinment two weeks out, which was fine with me. Showed up for my appointment at…read more8:00, for up to one hour of test drive diagnistic, and was told to leave my car "for a few days". Hell NO! These folks may be good mechanics, who knows. But they sure as hell don't know how to run a business!

We were on a two-car trip from Arizona to Seattle when every warning light on our Subaru Forester…read morestarted flashing. It happened at a very difficult time and place, about 150 miles east of St. George and in a snow storm. We stopped in Kanab for an engine test and were told that the transmission had developed a problem that would disable the All-Wheel-Drive. We were told that driving to St. George would not cause further damage to the transmission but the snow storm, without all-wheel-drive, resulted in a very cautious drive to St. George. We called ahead to St. George Transmission and they were familiar with that particular Subaru problem and they had the parts in stock. We decided that our other car, a Ford Transit 350 van handled even worse than the Subaru so while St. George Transmission fixed the Subaru, we had Snow tires put on the van. We have fond memories of St. George and, especially of St. George Transmission. They made our Forester safe to drive, even though the snow storm got worse as we drove on to Seattle. Great company and staff is very knowledgeable in Subaru transmission problems.

Performance Diesel Inc. - truckrepair - Updated May 2026

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